triode

noun
tri·​ode | \ˈtrī-ˌōd \

Definition of triode 

: an electron tube with an anode, a cathode, and a controlling grid

First Known Use of triode

1919, in the meaning defined above

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Dictionary Entries near triode

trio

triobol

trioctahedral

triode

triodia

triodion

Triodon

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The first known use of triode was in 1919

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